Camera optical lens

ABSTRACT

The present disclosure discloses a camera optical lens. The camera optical lens including, in an order from an object side to an image side, a first lens, a second lens having a positive refractive power, a third lens having a positive refractive power, a fourth lens, a fifth lens, and a sixth lens. The first lens is made of plastic material, the second lens is made of plastic material, the third lens is made of plastic material, the fourth lens is made of glass material, the fifth lens is made of plastic material, and the sixth lens is made of glass material. The camera optical lens further satisfies specific conditions.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims the priority benefit of Chinese Patent Applications Ser. No. 201711475739.8 and Ser. No. 201711475707.8 filed on Dec. 29, 2017, the entire content of which is incorporated herein by reference.

FIELD OF THE PRESENT DISCLOSURE

The present disclosure relates to optical lens, in particular to a camera optical lens suitable for handheld devices such as smart phones and digital cameras and imaging devices.

DESCRIPTION OF RELATED ART

With the emergence of smart phones in recent years, the demand for miniature camera lens is increasing day by day, but the photosensitive devices of general camera lens are no other than Charge Coupled Device (CCD) or Complementary metal-Oxide Semiconductor Sensor (CMOS sensor), and as the progress of the semiconductor manufacturing technology makes the pixel size of the photosensitive devices shrink, coupled with the current development trend of electronic products being that their functions should be better and their shape should be thin and small, miniature camera lens with good imaging quality therefor has become a mainstream in the market. In order to obtain better imaging quality, the lens that is traditionally equipped in mobile phone cameras adopts a three-piece or four-piece lens structure. And, with the development of technology and the increase of the diverse demands of users, and under this circumstances that the pixel area of photosensitive devices is shrinking steadily and the requirement of the system for the imaging quality is improving constantly, the five-piece, six-piece and seven-piece lens structure gradually appear in lens design. There is an urgent need for ultra-thin wide-angle camera lenses which have good optical characteristics and the chromatic aberration of which is fully corrected.

BRIEF DESCRIPTION OF THE DRAWINGS

Many aspects of the exemplary embodiments can be better understood with reference to the following drawings. The components in the drawing are not necessarily drawn to scale, the emphasis instead being placed upon clearly illustrating the principles of the present disclosure.

FIG. 1 is a schematic diagram of a camera optical lens in accordance with a first embodiment of the present invention;

FIG. 2 shows the longitudinal aberration of the camera optical lens shown in FIG. 1;

FIG. 3 shows the lateral color of the camera optical lens shown in FIG. 1;

FIG. 4 presents a schematic diagram of the field curvature and distortion of the camera optical lens shown in FIG. 1;

FIG. 5 is a schematic diagram of a camera optical lens in accordance with a second embodiment of the present invention;

FIG. 6 presents the longitudinal aberration of the camera optical lens shown in FIG. 5;

FIG. 7 presents the lateral color of the camera optical lens shown in FIG. 5;

FIG. 8 presents the field curvature and distortion of the camera optical lens shown in FIG. 5;

FIG. 9 is a schematic diagram of a camera optical lens in accordance with a third embodiment of the present invention;

FIG. 10 presents the longitudinal aberration of the camera optical lens shown in FIG. 9;

FIG. 11 presents the lateral color of the camera optical lens shown in FIG. 9;

FIG. 12 presents the field curvature and distortion of the camera optical lens shown in FIG. 9.

DETAILED DESCRIPTION OF THE EXEMPLARY EMBODIMENTS

The present disclosure will hereinafter be described in detail with reference to several exemplary embodiments. To make the technical problems to be solved, technical solutions and beneficial effects of the present disclosure more apparent, the present disclosure is described in further detail together with the figure and the embodiments. It should be understood the specific embodiments described hereby is only to explain the disclosure, not intended to limit the disclosure.

Embodiment 1

As referring to FIG. 1, the present invention provides a camera optical lens 10. FIG. 1 shows the camera optical lens 10 of embodiment 1 of the present invention, the camera optical lens 10 comprises 6 lenses. Specifically, from the object side to the image side, the camera optical lens 10 comprises in sequence: an aperture S1, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, and a sixth lens L6. Optical element like optical filter GF can be arranged between the sixth lens L6 and the image surface Si. The first lens L1 is made of plastic material, the second lens L2 is made of plastic material, the third lens L3 is made of plastic material, the fourth lens L4 is made of glass material, the fifth lens L5 is made of plastic material, and the sixth lens L6 is made of glass material.

The second lens L2 has a positive refractive power, and the third lens L3 has a positive refractive power.

Here, the focal length of the whole camera optical lens 10 is defined as f, the focal length of the first lens is defined as f1. The camera optical lens 10 further satisfies the following condition: 0.5≤f1/f≤10. Condition 0.5≤f1/f≤10 fixes the positive refractive power of the first lens L1. If the upper limit of the set value is exceeded, although it benefits the ultra-thin development of lenses, but the positive refractive power of the first lens L1 will be too strong, problem like aberration is difficult to be corrected, and it is also unfavorable for wide-angle development of lens. On the contrary, if the lower limit of the set value is exceeded, the positive refractive power of the first lens L1 becomes too weak, it is then difficult to develop ultra-thin lenses. Preferably, the following condition shall be satisfied, 1.967≤f1/f≤9.675.

The refractive power of the fourth lens L4 is defined as n4. Here the following condition should satisfied: 1.7≤n4≤2.2. This condition fixes the refractive power of the fourth lens L4, and refractive power within this range benefits the ultra-thin development of lenses, and it also benefits the correction of aberration. Preferably, the following condition shall be satisfied, 1.72≤n4≤2.18.

The refractive power of the sixth lens L6 is defined as n6. Here the following condition should satisfied: 1.7≤n6≤2.2. This condition fixes the refractive power of the sixth lens L6, and refractive power within this range benefits the ultra-thin development of lenses, and it also benefits the correction of aberration. Preferably, the following condition shall be satisfied, 1.704≤n6≤2.149.

When the focal length of the camera optical lens 10 of the present invention, the focal length of each lens, the refractive power of the related lens, and the total optical length, the thickness on-axis and the curvature radius of the camera optical lens satisfy the above conditions, the camera optical lens 10 has the advantage of high performance and satisfies the design requirement of low TTL.

In this embodiment, the first lens L1 has a positive refractive power with a convex object side surface relative to the proximal axis and a concave image side surface relative to the proximal axis.

The curvature radius of the object side surface of the first lens L1 is defined as R1, the curvature radius of the image side surface of the first lens L1 is defined as R2. The camera optical lens 10 further satisfies the following condition: −75.53≤(R1+R2)/(R1−R2)≤−5.97, the shape of the first lens L1 is controlled within reasonable scope, the spherical aberration of system can revised by the first lens L1. Preferably, the following condition shall be satisfied, −47.20≤(R1+R2)/(R1−R2)≤−7.47.

The thickness on-axis of the first lens L1 is defined as d1. The following condition: 0.15≤d1≤0.60 should be satisfied. When the condition is satisfied, it is beneficial for realization of the ultra-thin lens. Preferably, the condition 0.24≤d1≤0.48 shall be satisfied.

In this embodiment, the second lens L2 has a positive refractive power with a convex object side surface and a concave image side surface relative to the proximal axis.

The focal length of the whole camera optical lens 10 is f, the focal length of the second lens L2 is f2. The following condition should be satisfied: 0.77≤f2/f≤2.93. When the condition is satisfied, the positive refractive power of the second lens L2 is controlled within reasonable scope, the spherical aberration caused by the first lens L1 which has positive refractive power and the field curvature of the system then can be reasonably and effectively balanced. Preferably, the condition 1.23≤f2/f≤2.35 should be satisfied.

The curvature radius of the object side surface of the second lens L2 is defined as R3, the curvature radius of the image side surface of the second lens L2 is defined as R4. The following condition should be satisfied: −4.28≤(R3+R4)/(R3−R4)≤−1.02, which fixes the shape of the second lens L2 and can effectively correct aberration of the camera optical lens. Preferably, the following condition shall be satisfied, −2.67≤(R3+R4)/(R3−R4)≤−1.28.

The thickness on-axis of the second lens L2 is defined as d3. The following condition: 0.24≤d3≤0.86 should be satisfied. When the condition is satisfied, it is beneficial for realization of the ultra-thin lens. Preferably, the condition 0.39≤d3≤0.69 shall be satisfied.

In this embodiment, the third lens L3 has a positive refractive power with a concave object side surface and a convex image side surface relative to the proximal axis.

The focal length of the whole camera optical lens 10 is f, the focal length of the third lens L3 is f3. The following condition should be satisfied: f3/f≥30.89, by which the field curvature of the system then can be reasonably and effectively balanced. Preferably, the condition f3/f≥49.43 should be satisfied.

The curvature radius of the object side surface of the third lens L3 is defined as R5, the curvature radius of the image side surface of the third lens L3 is defined as R6. The following condition should be satisfied: 1.10≤(R5+R6)/(R5−R6)≤5437.31, by which, with the development into the direction of ultra-thin and wide-angle lenses, problem like aberration of the off-axis picture angle is difficult to be corrected. Preferably, the following condition shall be satisfied, 1.75≤(R5+R6)/(R5−R6)≤4349.85.

The thickness on-axis of the third lens L3 is defined as d5. The following condition: 0.11≤d5≤0.37 should be satisfied. When the condition is satisfied, it is beneficial for realization of the ultra-thin lens. Preferably, the condition 0.17≤d5≤0.30 shall be satisfied.

In this embodiment, the fourth lens L4 has a positive refractive power with a concave object side surface and a convex image side surface relative to the proximal axis.

The focal length of the whole camera optical lens 10 is f, the focal length of the fourth lens L4 is f4. The following condition should be satisfied: 0.43≤f4/f≤1.38, which can effectively reduce the sensitivity of lens group used in camera and further enhance the imaging quality. Preferably, the condition 0.69≤f4/f≤1.10 should be satisfied.

The curvature radius of the object side surface of the fourth lens L4 is defined as R7, the curvature radius of the image side surface of the fourth lens L4 is defined as R8. The following condition should be satisfied: 1.67≤(R7+R8)/(R7−R8)≤6.75, by which, with the development into the direction of ultra-thin and wide-angle lenses, problem like aberration of the off-axis picture angle is difficult to be corrected. Preferably, the following condition shall be satisfied, 2.67≤(R7+R8)/(R7−R8)≤5.40.

The thickness on-axis of the fourth lens L4 is defined as d7. The following condition: 0.22≤d7≤0.76 should be satisfied. When the condition is satisfied, it is beneficial for realization of the ultra-thin lens. Preferably, the condition 0.35≤d7≤0.60 shall be satisfied.

In this embodiment, the fifth lens L5 has a negative refractive power with a concave object side surface and a convex image side surface relative to the proximal axis.

The focal length of the whole camera optical lens 10 is f, the focal length of the fifth lens L5 is f5. The following condition should be satisfied: −1.78≤f5/f≤−0.54, which can effectively smooth the light angles of the camera and reduce the tolerance sensitivity. Preferably, the condition −1.11≤f5/f≤−0.67 should be satisfied.

The curvature radius of the object side surface of the fifth lens L5 is defined as R9, the curvature radius of the image side surface of the fifth lens L5 is defined as R10. The following condition should be satisfied: −3.86≤(R9+R10)/(R9−R10)≤−1.13, by which, the shape of the fifth lens L5 is fixed, further, with the development into the direction of ultra-thin and wide-angle lenses, problem like aberration of the off-axis picture angle is difficult to be corrected. Preferably, the following condition shall be satisfied, −2.41≤(R9+R10)/(R9−R10)≤−1.42.

The thickness on-axis of the fifth lens L5 is defined as d9. The following condition: 0.12≤d9≤0.38 should be satisfied. When the condition is satisfied, it is beneficial for realization of the ultra-thin lens. Preferably, the condition 0.20≤d9≤0.31 shall be satisfied.

In this embodiment, the sixth lens L6 has a positive refractive power with a convex object side surface and a concave image side surface relative to the proximal axis.

The focal length of the whole camera optical lens 10 is f, the focal length of the sixth lens L6 is f6. The following condition should be satisfied: 0.99≤f6/f≤4.74, which can effectively reduce the sensitivity of lens group used in camera and further enhance the imaging quality. Preferably, the condition 1.59≤f6/f≤3.79 should be satisfied.

The curvature radius of the object side surface of the sixth lens L6 is defined as R11, the curvature radius of the image side surface of the sixth lens L6 is defined as R12. The following condition should be satisfied: −91.98≤(R11+R12)/(R11−R12)≤172.90, by which, the shape of the sixth lens L6 is fixed, further, with the development into the direction of ultra-thin and wide-angle lenses, problem like aberration of the off-axis picture angle is difficult to be corrected. Preferably, the following condition shall be satisfied, −57.49≤(R11+R12)/(R11−R12)≤138.32.

The thickness on-axis of the sixth lens L6 is defined as d11. The following condition: 0.33≤d11≤1.31 should be satisfied. When the condition is satisfied, it is beneficial for realization of the ultra-thin lens. Preferably, the condition 0.53≤d11≤1.05 shall be satisfied.

The focal length of the whole camera optical lens 10 is f, the combined focal length of the first lens L1 and the second lens L2 is f12. The following condition should be satisfied: 0.62≤f12/f≤2.07, which can effectively avoid the aberration and field curvature of the camera optical lens, and can suppress the rear focal length for realizing the ultra-thin lens. Preferably, the condition 0.99≤f12/f≤1.66 should be satisfied.

In this embodiment, the total optical length TTL of the camera optical lens 10 is less than or equal to 6.04 mm, it is beneficial for the realization of ultra-thin lenses. Preferably, the total optical length TTL of the camera optical lens 10 is less than or equal to 5.77 mm.

In this embodiment, the aperture F number of the camera optical lens 10 is less than or equal to 2.06. A large aperture has better imaging performance. Preferably, the aperture F number of the camera optical lens 10 is less than or equal to 2.02.

With such design, the total optical length TTL of the whole camera optical lens 10 can be made as short as possible, thus the miniaturization characteristics can be maintained.

In the following, an example will be used to describe the camera optical lens 10 of the present invention. The symbols recorded in each example are as follows. The unit of distance, radius and center thickness is mm.

TTL: Optical length (the distance on-axis from the object side surface of the first lens L1 to the image surface).

Preferably, inflexion points and/or arrest points can also be arranged on the object side surface and/or image side surface of the lens, so that the demand for high quality imaging can be satisfied, the description below can be referred for specific implementable scheme.

The design information of the camera optical lens 10 in the first embodiment of the present invention is shown in the following, the unit of the focal length, distance, radius and center thickness is mm.

The design information of the camera optical lens 10 in the first embodiment of the present invention is shown in the tables 1 and 2.

TABLE 1 R d nd vd S1 ∞ d0 = −0.281 R1 1.796 d1 = 0.402 nd1 1.535000 v1 56.30 R2 2.108 d2 = 0.148 R3 2.363 d3 = 0.486 nd2 1.514000 v2 56.80 R4 6.512 d4 = 0.345 R5 −264.306 d5 = 0.217 nd3 1.621877 v3 20.00 R6 −98.641 d6 = 0.261 R7 −2.795 d7 = 0.503 nd4 1.742077 v4 57.00 R8 −1.505 d8 = 0.036 R9 −1.612 d9 = 0.256 nd5 1.614000 v5 25.60 R10 −6.218 d10 = 0.281 R11 1.755 d11 = 0.871 nd6 1.707661 v6 46.46 R12 1.725 d12 = 0.749 R13 ∞ d13 = 0.210 ndg 1.516800 vg 64.17 R14 ∞ d14 = 0.726

Where:

In which, the meaning of the various symbols is as follows.

S1: Aperture;

R: The curvature radius of the optical surface, the central curvature radius in case of lens;

R1: The curvature radius of the object side surface of the first lens L1;

R2: The curvature radius of the image side surface of the first lens L1;

R3: The curvature radius of the object side surface of the second lens L2;

R4: The curvature radius of the image side surface of the second lens L2;

R5: The curvature radius of the object side surface of the third lens L3;

R6: The curvature radius of the image side surface of the third lens L3;

R7: The curvature radius of the object side surface of the fourth lens L4;

R8: The curvature radius of the image side surface of the fourth lens L4;

R9: The curvature radius of the object side surface of the fifth lens L5;

R10: The curvature radius of the image side surface of the fifth lens L5;

R11: The curvature radius of the object side surface of the sixth lens L6;

R12: The curvature radius of the image side surface of the sixth lens L6;

R13: The curvature radius of the object side surface of the optical filter GF;

R14: The curvature radius of the image side surface of the optical filter GF;

d: The thickness on-axis of the lens and the distance on-axis between the lens;

d0: The distance on-axis from aperture S1 to the object side surface of the first lens L1;

d1: The thickness on-axis of the first lens L1;

d2: The distance on-axis from the image side surface of the first lens L1 to the object side surface of the second lens L2;

d3: The thickness on-axis of the second lens L2;

d4: The distance on-axis from the image side surface of the second lens L2 to the object side surface of the third lens L3;

d5: The thickness on-axis of the third lens L3;

d6: The distance on-axis from the image side surface of the third lens L3 to the object side surface of the fourth lens L4;

d7: The thickness on-axis of the fourth lens L4;

d8: The distance on-axis from the image side surface of the fourth lens L4 to the object side surface of the fifth lens L5;

d9: The thickness on-axis of the fifth lens L5;

d10: The distance on-axis from the image side surface of the fifth lens L5 to the object side surface of the sixth lens L6;

d11: The thickness on-axis of the sixth lens L6;

d12: The distance on-axis from the image side surface of the sixth lens L6 to the object side surface of the optical filter GF;

d13: The thickness on-axis of the optical filter GF;

d14: The distance on-axis from the image side surface to the image surface of the optical filter GF;

nd: The refractive power of the d line;

nd1: The refractive power of the d line of the first lens L1;

nd2: The refractive power of the d line of the second lens L2;

nd3: The refractive power of the d line of the third lens L3;

nd4: The refractive power of the d line of the fourth lens L4;

nd5: The refractive power of the d line of the fifth lens L5;

nd6: The refractive power of the d line of the sixth lens L6;

ndg: The refractive power of the d line of the optical filter GF;

vd: The abbe number;

v1: The abbe number of the first lens L1;

v2: The abbe number of the second lens L2;

v3:The abbe number of the third lens L3;

v4: The abbe number of the fourth lens L4;

v5: The abbe number of the fifth lens L5;

v6: The abbe number of the sixth lens L6;

vg: The abbe number of the optical filter GF.

Table 2 shows the aspherical surface data of the camera optical lens 10 in the embodiment 1 of the present invention.

TABLE 2 Conic Index Aspherical Surface Index k A4 A6 A8 A10 A12 A14 A16 R1 4.1718E−01 −0.019338859 0.003481939 −0.012959576 0.014393577 −0.010109806 0.002822803 −8.33E−04 R2 −1.9404E−01 −0.042018536 −0.002179058 0.003952064 −0.004651771 −0.01282626 0.007734172 −0.00287329 R3 −5.5942E+00 0.003875733 −0.042893134 0.000551115 0.035771718 −0.071680902 0.028710898 −0.002624364 R4 1.2046E+01 −0.047185841 −0.031883507 −0.040500477 0.056164394 −0.067739738 0.027830816 −0.000907607 R5 −3.4861E+10 −0.094159735 −0.049475656 −0.064876716 −0.010610422 0.029118377 0.004606847 −0.00175886 R6 −1.0163E+08 −0.065225466 0.034614391 −0.14101621 0.15341279 −0.085518891 0.020630917 −0.000505645 R7 3.0057E+00 −0.051732352 0.040499073 0.080988614 −0.053764408 −0.011917456 1.97E−02 −4.34E−03 R8 −3.3539E−01 0.010225405 −0.033499107 0.060426296 −0.037937689 0.017564942 −2.76E−03 3.47E−05 R9 −6.0771E+00 0.038928189 −0.19723224 0.35719277 −0.43050731 3.03E−01 −1.11E−01 1.63E−02 R10 2.2815E+00 −0.15542846 0.23751449 −0.25542128 1.71E−01 −6.39E−02 1.24E−02 −9.78E−04 R11 −9.4071E+00 −0.15542846 0.029633654 −0.002006543 −0.00026235 1.30715E−05 7.28E−06 −6.94E−07 R12 −5.6881E+00 −0.10860102 0.016899136 −0.00302066 3.26E−04 −1.80E−05 3.67E−07 −2.27E−09

Among them, K is a conic index, A4, A6, A8, A10, A12, A14, A16 are aspheric surface indexes.

IH: Image height y=(x ² /R)/[1+{1−(k+1)(x ² /R ²)}^(1/2)]+A4x ⁴ +A6x ⁶ +A8x ⁸ +A10x ¹⁰ +A12x ¹² +A14x ¹⁴ +A16x ¹⁶  (1)

For convenience, the aspheric surface of each lens surface uses the aspheric surfaces shown in the above condition (1). However, the present invention is not limited to the aspherical polynomials form shown in the condition (1).

Table 3 and table 4 show the inflexion points and the arrest point design data of the camera optical lens 10 lens in embodiment 1 of the present invention. In which, P1R1 and P1R2 represent respectively the object side surface and image side surface of the first lens L1, P2R1 and P2R2 represent respectively the object side surface and image side surface of the second lens L2, P3R1 and P3R2 represent respectively the object side surface and image side surface of the third lens L3, P4R1 and P4R2 represent respectively the object side surface and image side surface of the fourth lens L4, P5R1 and P5R2 represent respectively the object side surface and image side surface of the fifth lens L5, P6R1 and P6R2 represent respectively the object side surface and image side surface of the sixth lens L6. The data in the column named “inflexion point position” are the vertical distances from the inflexion points arranged on each lens surface to the optic axis of the camera optical lens 10. The data in the column named “arrest point position” are the vertical distances from the arrest points arranged on each lens surface to the optic axis of the camera optical lens 10.

TABLE 3 Inflexion point Inflexion point Inflexion point Inflexion point number position 1 position 2 position 3 P1R1 0 P1R2 1 0.845 P2R1 1 0.685 P2R2 1 0.455 P3R1 1 1.125 P3R2 1 1.245 P4R1 2 0.875 1.265 P4R2 1 1.045 P5R1 1 1.355 P5R2 2 1.135 1.535 P6R1 3 0.495 1.555 2.235 P6R2 1 0.685

TABLE 4 Arrest point number Arrest point position 1 P1R1 0 P1R2 0 P2R1 1 0.975 P2R2 1 0.705 P3R1 0 P3R2 0 P4R1 0 P4R2 1 1.345 P5R1 0 P5R2 0 P6R1 1 1.045 P6R2 1 1.595

FIG. 2 and FIG. 3 show the longitudinal aberration and lateral color schematic diagrams after light with a wavelength of 486.1 nm, 587.6 nm and 656.3 nm passes the camera optical lens 10 in the first embodiment. FIG. 4 shows the field curvature and distortion schematic diagrams after light with a wavelength of 587.6 nm passes the camera optical lens 10 in the first embodiment, the field curvature S in FIG. 4 is a field curvature in the sagittal direction, T is a field curvature in the meridian direction.

Table 13 shows the various values of the embodiments 1, 2, 3, and the values corresponding with the parameters which are already specified in the conditions.

As shown in Table 13, the first embodiment satisfies the various conditions.

In this embodiment, the pupil entering diameter of the camera optical lens is 2.04672 mm, the full vision field image height is 3.512 mm, the vision field angle in the diagonal direction is 81.26°, it has wide-angle and is ultra-thin, its on-axis and off-axis chromatic aberrations are fully corrected, and it has excellent optical characteristics.

Embodiment 2

Embodiment 2 is basically the same as embodiment 1, the meaning of its symbols is the same as that of embodiment 1, in the following, only the differences are described.

Table 5 and table 6 show the design data of the camera optical lens 20 in embodiment 2 of the present invention.

TABLE 5 R d nd vd S1 ∞ d0 = −0.233 R1 1.823 d1 = 0.372 nd1 1.5350 v1 56.30 R2 2.281 d2 = 0.130 R3 2.828 d3 = 0.489 nd2 1.5140 v2 56.80 R4 9.877 d4 = 0.303 R5 −182.780 d5 = 0.248 nd3 1.6019 v3 20.00 R6 −181.105 d6 = 0.283 R7 −2.750 d7 = 0.442 nd4 2.128123 v4 59.21 R8 −1.726 d8 = 0.049 R9 −1.337 d9 = 0.253 nd5 1.6140 v5 25.60 R10 −4.769 d10 = 0.276 R11 1.860 d11 = 0.664 nd6 2.097087 v6 45.96 R12 1.943183 d12 = 0.856 R13 ∞ d13 = 0.210 ndg 1.5168 vg 64.17 R14 ∞ d14 = 0.832

Table 6 shows the aspherical surface data of each lens of the camera optical lens 20 in embodiment 2 of the present invention.

TABLE 6 Conic Index Aspherical Surface Index k A4 A6 A8 A10 A12 A14 A16 R1 4.1347E−01 −0.016841126 9.60961E−05 −0.016042327 0.013397526 −0.009497203 0.002412159 −2.01E−03 R2 3.9516E−01 −0.025939561 −0.007457301 −0.007816363 −0.007614095 −0.012872668 0.007580946 −0.004418155 R3 −9.4590E+00 0.025032831 −0.04050077 −0.006891237 0.034979167 −0.073825378 0.026083334 −0.003447511 R4 1.4094E+01 −0.049540561 −0.028660158 −0.042255928 0.052685402 −0.07062186 0.028510778 7.22E−05 R5 −2.9564E+07 −0.090737102 −0.057543365 −0.069865312 −0.009879505 0.030698881 0.006020615 −0.001462454 R6 −4.7005E+06 −0.056816425 0.034843644 −0.14190905 0.15303052 −0.085228458 0.020806396 −0.000747606 R7 2.9693E+00 −0.053995049 0.033280304 0.080607396 −0.052211236 −0.011156695 0.019739336 −4.47E−03 R8 −2.3263E−01 0.000112507 −0.036976223 0.060158311 −0.038209945 0.017332591 −0.002805499 1.26E−04 R9 −6.1210E+00 0.06050339 −0.20692314 0.35557283 −0.42925139 0.30413033 −1.11E−01 0.016009073 R10 −1.2497E+01 −0.14456797 0.23971129 −0.25598814 0.17064027 −0.063953572 0.012363335 −9.70E−04 R11 −1.1401E+01 −0.14456797 0.028331241 −0.001962014 −0.000252612 1.37428E−05 7.2579E−06 −7.19E−07 R12 −1.0782E+01 −0.10339561 0.017223227 −0.003005228 3.28E−04 −1.81E−05 3.29E−07 −5.56E−09

Table 7 and table 8 show the inflexion points and the arrest point design data of the camera optical lens 20 lens in embodiment 2 of the present invention.

TABLE 7 Inflexion point Inflexion point Inflexion point Inflexion point number position 1 position 2 position 3 P1R1 1 1.015 P1R2 1 0.785 P2R1 1 0.695 P2R2 1 0.375 P3R1 1 1.105 P3R2 1 1.265 P4R1 2 0.945 1.255 P4R2 1 1.055 P5R1 1 1.355 P5R2 2 1.035 1.495 P6R1 3 0.485 1.565 2.225 P6R2 1 0.585

TABLE 8 Arrest point number Arrest point position 1 P1R1 0 P1R2 1 1.035 P2R1 1 0.945 P2R2 1 0.595 P3R1 0 P3R2 0 P4R1 0 P4R2 1 1.345 P5R1 0 P5R2 0 P6R1 1 1.015 P6R2 1 1.295

FIG. 6 and FIG. 7 show the longitudinal aberration and lateral color schematic diagrams after light with a wavelength of 486.1 nm, 587.6 nm and 656.3 nm passes the camera optical lens 20 in the second embodiment. FIG. 8 shows the field curvature and distortion schematic diagrams after light with a wavelength of 587.6 nm passes the camera optical lens 20 in the second embodiment.

As shown in Table 13, the second embodiment satisfies the various conditions.

In this embodiment, the pupil entering diameter of the camera optical lens is 1.92529 mm, the full vision field image height is 3.512 mm, the vision field angle in the diagonal direction is 84.73°, it has wide-angle and is ultra-thin, its on-axis and off-axis chromatic aberrations are fully corrected, and it has excellent optical characteristics.

Embodiment 3

Embodiment 3 is basically the same as embodiment 1, the meaning of its symbols is the same as that of embodiment 1, in the following, only the differences are described.

Table 9 and table 10 show the design data of the camera optical lens 30 in embodiment 3 of the present invention.

TABLE 9 R d nd vd S1 ∞ d0 = −0.194 R1 1.941 d1 = 0.303 nd1 1.5350 v1 56.30 R2 2.046 d2 = 0.080 R3 2.389 d3 = 0.571 nd2 1.5140 v2 56.80 R4 11.285 d4 = 0.295 R5 163.456 d5 = 0.245 nd3 1.5838 v3 20.51 R6 163.366 d6 = 0.296 R7 −2.747 d7 = 0.436 nd4 2.1533 v4 66.35 R8 −1.748 d8 = 0.053 R9 −1.359 d9 = 0.249 nd5 1.6140 v5 25.60 R10 −4.278 d10 = 0.299 R11 1.790 d11 = 0.667 nd6 1.9662 v6 49.01 R12 1.903807 d12 = 0.854 R13 ∞ d13 = 0.210 ndg 1.5168 vg 64.17 R14 ∞ d14 = 0.830

Table 10 shows the aspherical surface data of each lens of the camera optical lens 30 in embodiment 3 of the present invention.

TABLE 10 Conic Index Aspherical Surface Index k A4 A6 A8 A10 A12 A14 A16 R1 3.0977E−01 −0.018394413 −0.005420482 −0.018045318 0.014036541 −0.007561409 0.003738922 −3.81E−03 R2 −1.6548E−01 −0.037856259 −0.01074792 −0.008846781 −0.009891665 −0.014571011 0.008802719 0.00094435 R3 −7.1715E+00 0.034204084 −0.038253041 −0.009373165 0.03469601 −0.07163187 0.028345824 −0.002727536 R4 1.2024E+01 −0.050270218 −0.027133434 −0.038853788 0.053066921 −0.071493802 0.027509441 −0.000563054 R5 −1.1812E+06 −0.10142613 −0.060713926 −0.071285804 −0.010166282 0.030842452 0.006154069 −0.001455668 R6 −2.2578E+03 −0.063470702 0.032900614 −0.14248588 0.15273866 −0.085416679 0.020668627 −0.000862434 R7 2.9285E+00 −0.056786731 0.033007866 0.080723524 −0.052169871 −0.011202947 0.019652908 −0.004554252 R8 −2.0984E−01 −0.001023705 −0.037195798 0.060013345 −0.038279516 0.017290453 −0.0028275 1.23E−04 R9 −5.5821E+00 0.065932509 −0.20790139 0.35488923 −0.42950904 0.30406693 −1.11E−01 1.60E−02 R10 −9.1029E+00 −0.14207686 0.23990815 −0.25605502 0.17060918 −0.063961825 0.012363126 −9.68E−04 R11 −9.9972E+00 −0.14207686 0.028290824 −0.0019685 −0.000252385 1.38082E−05 7.25179E−06 −7.22E−07 R12 −9.1299E+00 −0.10275905 0.017258211 −0.003002452 3.28E−04 −1.81E−05 3.21E−07 −6.75E−09

Table 11 and table 12 show the inflexion points and the arrest point design data of the camera optical lens 30 lens in embodiment 3 of the present invention.

TABLE 11 Inflexion point Inflexion point Inflexion point Inflexion point number position 1 position 2 position 3 P1R1 1 0.955 P1R2 1 0.755 P2R1 1 0.725 P2R2 1 0.355 P3R1 2 0.065 1.115 P3R2 1 0.095 P4R1 2 0.975 1.225 P4R2 1 1.065 P5R1 1 1.375 P5R2 2 1.035 1.495 P6R1 3 0.505 1.555 2.205 P6R2 1 0.605

TABLE 12 Arrest point number Arrest point position 1 P1R1 P1R2 P2R1 1 0.985 P2R2 1 0.575 P3R1 1 0.105 P3R2 1 0.155 P4R1 P4R2 1 1.355 P5R1 P5R2 P6R1 1 1.065 P6R2 1 1.365

FIG. 10 and FIG. 11 show the longitudinal aberration and lateral color schematic diagrams after light with a wavelength of 486.1 nm, 587.6 nm and 656.3 nm passes the camera optical lens 30 in the third embodiment. FIG. 12 shows the field curvature and distortion schematic diagrams after light with a wavelength of 587.6 nm passes the camera optical lens 30 in the third embodiment.

As shown in Table 13, the third embodiment satisfies the various conditions.

In this embodiment, the pupil entering diameter of the camera optical lens is 1.88046 mm, the full vision field image height is 3.512 mm, the vision field angle in the diagonal direction is 86.08°, it has wide-angle and is ultra-thin, its on-axis and off-axis chromatic aberrations are fully corrected, and it has excellent optical characteristics.

TABLE 13 Embodiment 1 Embodiment 2 Embodiment 3 f 4.093 3.851 3.761 fl 15.646 13.220 35.161 f2 6.941 7.533 5.770 f3 252.932 31093.350 4.367E+10 f4 3.767 3.343 3.377 f5 −3.620 −3.114 −3.354 f6 12.929 7.662 7.988 f12 5.076 5.027 5.197 (R1+R2)/ −12.499 −8.960 −37.763 (R1 − R2) (R3 + R4)/ −2.139 −1.802 −1.537 (R3 − R4) (R5 + R6)/ 2.191 217.164 3624.873 (R5 − R6) (R7 + R8)/ 3.333 4.370 4.498 (R7 − R8) (R9 + R10)/ −1.700 −1.779 −1.932 (R9 − R10) (R11 + R12)/ 115.266 −45.992 −32.497 (R11 − R12) f1/f 3.822 3.433 9.349 f2/f 1.696 1.956 1.534 f3/f 61.790 8074.970 1.161E+10 f4/f 0.920 0.868 0.898 f5/f −0.884 −0.809 −0.892 f6/f 3.158 1.990 2.124 f12/f 1.240 1.306 1.382 d1 0.402 0.372 0.303 d3 0.486 0.489 0.571 d5 0.217 0.248 0.245 d7 0.503 0.442 0.436 d9 0.256 0.253 0.249 d11 0.871 0.664 0.667 Fno 2.000 2.000 2.000 TTL 5.493 5.408 5.389 d1/TTL 0.073 0.069 0.056 d3/TTL 0.089 0.090 0.106 d5/TTL 0.040 0.046 0.045 d7/TTL 0.092 0.082 0.081 d9/TTL 0.047 0.047 0.046 d11/TTL 0.159 0.123 0.124 n1 1.5350 1.5350 1.5350 n2 1.5140 1.5140 1.5140 113 1.6220 1.6019 1.5838 114 1.7420 2.1280 2.1533 115 1.6140 1.6140 1.6140 n6 1.7080 2.0970 1.9662 v1 56.3000 56.3000 56.3000 v2 56.8000 56.8000 56.8000 v3 19.9997 20.0000 20.5060 v4 57.0023 59.2000 66.3451 v5 25.6000 25.6000 25.6000 v6 46.4581 46.0000 49.0091

It is to be understood, however, that even though numerous characteristics and advantages of the present exemplary embodiments have been set forth in the foregoing description, together with details of the structures and functions of the embodiments, the disclosure is illustrative only, and changes may be made in detail, especially in matters of shape, size, and arrangement of parts within the principles of the invention to the full extent indicated by the broad general meaning of the terms where the appended claims are expressed. 

What is claimed is:
 1. A camera optical lens comprising, from an object side to an image side in sequence: a first lens having a positive refractive power with a convex object side surface and a concave image side surface, a second lens having a positive refractive power, a third lens having a positive refractive power, a fourth lens, a fifth lens, and a sixth lens; wherein the camera optical lens further satisfies the following conditions: 0.5≤f1/f≤10; 1.7≤n4≤2.2; 1.7≤n6≤2.2; −75.53≤(R1+R2)/(R1−R2)≤−5.97; 0.15≤d1≤0.60; where f: the focal length of the camera optical lens; f1: the focal length of the first lens; n4: the refractive power of the fourth lens; n6: the refractive power of the sixth lens; R1: the curvature radius of object side surface of the first lens; R2: the curvature radius of image side surface of the first lens; d1: the thickness on-axis of the first lens.
 2. The camera optical lens as described in claim 1, wherein the first lens is made of plastic material, the second lens is made of plastic material, the third lens is made of plastic material, the fourth lens is made of glass material, the fifth lens is made of plastic material, the sixth lens is made of glass material.
 3. The camera optical lens as described in claim 1 further satisfying the following conditions: 1.967≤f1/f≤9.675; 1.72≤n4≤2.18; 1.704≤n6≤2.149.
 4. The camera optical lens as described in claim 1 further satisfying the following conditions: −47.20≤(R1+R2)/(R1−R2)≤−7.47; 0.24≤d1≤0.48.
 5. The camera optical lens as described in claim 1, wherein the second lens has a convex object side surface and a concave image side surface; the camera optical lens further satisfies the following conditions: 0.77≤f2/f≤2.93; −4.28≤(R3+R4)/(R3−R4)≤−1.02; 0.24≤d3≤0.86; where f: the focal length of the camera optical lens; f2: the focal length of the second lens; R3: the curvature radius of the object side surface of the second lens; R4: the curvature radius of the image side surface of the second lens; d3: the thickness on-axis of the second lens.
 6. The camera optical lens as described in claim 5 further satisfying the following conditions: 1.23≤f2/f≤2.35; −2.67≤(R3+R4)/(R3−R4)≤−1.28; 0.39≤d3≤0.69.
 7. The camera optical lens as described in claim 1, wherein the camera optical lens further satisfies the following conditions: f3/f≥30.89; 1.10≤(R5+R6)/(R5−R6)≤5437.31; 0.11≤d5≤0.37; where f: the focal length of the camera optical lens; f3: the focal length of the third lens; R5: the curvature radius of the object side surface of the third lens; R6: the curvature radius of the image side surface of the third lens; d5: the thickness on-axis of the third lens.
 8. The camera optical lens as described in claim 7 further satisfying the following conditions: f3/f≥49.43; 1.75≤(R5+R6)/(R5−R6)≤4349.85; 0.17≤d5≤0.30.
 9. The camera optical lens as described in claim 1, wherein the fourth lens has a positive refractive power with a concave object side surface and a convex image side surface; the camera optical lens further satisfies the following conditions: 0.43≤f4/f≤1.38; 1.67≤(R7+R8)/(R7−R8)≤6.75; 0.22≤d7≤0.76; where f: the focal length of the camera optical lens; f4: the focal length of the fourth lens; R7: the curvature radius of the object side surface of the fourth lens; R8: the curvature radius of the image side surface of the fourth lens; d7: the thickness on-axis of the fourth lens.
 10. The camera optical lens as described in claim 9 further satisfying the following conditions: 0.69≤f4/f≤1.10; 2.67≤(R7+R8)/(R7−R8)≤5.40; 0.35≤d7≤0.60.
 11. The camera optical lens as described in claim 1, wherein the fifth lens has a negative refractive power with a concave object side surface and a convex image side surface; the camera optical lens further satisfies the following conditions: −1.78≤f5/f≤−0.54; −3.86≤(R9+R10)/(R9−R10)≤−1.13; 0.12≤d9≤0.38; where f: the focal length of the camera optical lens; f5: the focal length of the fifth lens; R9: the curvature radius of the object side surface of the fifth lens; R10: the curvature radius of the image side surface of the fifth lens; d9: the thickness on-axis of the fifth lens.
 12. The camera optical lens as described in claim 11 further satisfying the following conditions: −1.11≤f5/f≤−0.67; −2.41≤(R9+R10)/(R9−R10)≤−1.42; 0.20≤d9≤0.31.
 13. The camera optical lens as described in claim 1, wherein the sixth lens has a positive refractive power with a convex object side surface and a concave image side surface; the camera optical lens further satisfies the following conditions: 0.99≤f6/f≤4.74; −91.98≤(R11+R12)/(R11−R12)≤172.90; 0.33≤d11≤1.31; where f: the focal length of the camera optical lens; f6: the focal length of the sixth lens; R11: the curvature radius of the object side surface of the sixth lens; R12: the curvature radius of the image side surface of the sixth lens; d11: the thickness on-axis of the sixth lens.
 14. The camera optical lens as described in claim 13 further satisfying the following conditions: 1.59≤f6/f≤3.79; −57.49≤(R11+R12)/(R11−R12)≤138.32; 0.53≤d11≤1.05.
 15. The camera optical lens as described in claim 1 further satisfying the following condition: 0.62≤f12/f≤2.07; where f12: the combined focal length of the first lens and the second lens; f: the focal length of the camera optical lens.
 16. The camera optical lens as described in claim 15 further satisfying the following condition: 0.99≤f12/f≤1.66.
 17. The camera optical lens as described in claim 1, wherein the total optical length TTL of the camera optical lens is less than or equal to 6.04 mm.
 18. The camera optical lens as described in claim 17, wherein the total optical length TTL of the camera optical lens is less than or equal to 5.77 mm.
 19. The camera optical lens as described in claim 1, wherein the aperture F number of the camera optical lens is less than or equal to 2.06.
 20. The camera optical lens as described in claim 19, wherein the aperture F number of the camera optical lens is less than or equal to 2.02. 